Macaron
Open in tool →Rose, sky and pistachio at patisserie strength — the pastel trio, with a plum-grey text colour so it never washes out.
Color
#40303d
#40303d
hex
#40303drgb
rgb(64, 48, 61)hsl
hsl(311, 14%, 22%)oklch
oklch(0.332 0.032 332.9)Closest name: After Dark (#3c3535)Relative luminance 0.0354
Colors that go with #40303d
Dark Olive Green, Sea Green and Teal lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.
Dark Olive Green #556b2f
split-complementshippedDark Olive Green is a split-complement of #40303d: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Sea Green #2e8b57
complementaryshippedSea Green sits directly opposite #40303d on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Teal #008080
split-complementshippedTeal is a split-complement of #40303d: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Amber #ffbf00
shippedAmber is paired with #40303d in 8 real palettes, including McDonald's's brand system and Beach Hut, as the lead colour.
Blue #0000ff
shipped14 real palettes, including Dunkin''s brand system and Minecraft's brand system put Blue beside #40303d, as the supporting colour.
Blush Pink #e8b4b8
shipped5 real palettes, including Blush and Garden Wedding put Blush Pink beside #40303d, as the supporting colour.
Burlywood #deb887
shippedBurlywood is paired with #40303d in 5 real palettes, including Polaroid and Coastal, as the accent.
Cream #fffdd0
neutralCream is the surface #40303d wants: a warm off-white that shares its undertone, so #40303d reads softer on it than on pure white.
Real palettes that use #40303d
Tints & shades
Harmonies
Contrast
| #40303d as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 12.29:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 1.71:1 | fail | fail | fail |
Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #40303d as the background.
Brands using this color
No public brand in the corpus uses this exact color yet. Extract a brand to add one.
Palettes built around it
Fonts for this mood
#40303d reads as warm, muted, dark. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #40303d
live endpointPoint any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.
endpoint
https://mcp.brandsweets.com/colors/mcpclaude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt
›analyze #40303d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/40303d-c19fb7-82cb62-2d1f25-efe9f1?lock=0&style=vibrantWant the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.
Machine-readable: color.md